Core cutting machines



Nov. 27, 1956 Filed March 12, 1953 C. G. DUENKE ET AL CORE CUTTING MACHINES 4 Sheets-Sheet l I INVENTORS CLARENCE G. DUENKE THOMAS W. SKILLINGTON ATTORNEY Nov. 27, 1956 c. G. DUENKE ETAL CORE CUTTING MACHINES 4 Sheetse-Sheet 2 Filed March 12, 1953 IIM 7 ATTORNEY Nov. 27, 1956 c. G. DUENKE EI'AL 2,771,717

CORE CUTTING MACHINES Filed March 12, 1953 4.She.ets-.Sheet 3 INVENTORS,

CLARENCE G DUENKE gHoMAs W. SKILLINGTON ATTORNEY Nov. 27, 1956 c. G. DUENKE ETAL 2,771,717

CORE CUTTING MACHINES Filed March 12; 1953 4 Sheets-Sheet 4 V I I 1 INVENTORS. CLARENCE G. DUENKE THoMAsW. SKILLINGTON z AW- m AT TO R N EY United States Patent CORE CUTTING MACHINES Clarence G. Duenke, Webster Groves, and Thomas W.

Skillington, Jennings, Mo., assignors to Moloney Electric Company, St. Louis, Mo., a corporation of Delaware Application March 12, 1953, Serial No. 341,852

9 Claims. (Cl. 51-108) This invention relates generally to cutting machines and more specifically to a machine for cutting wound cores, intended for use in electrical induction devices in half, the predominant object of the invention being to provide such a cutting machine which is of simple construction and arrangement and is capable of performing its intended function in a highly eflicient automatic manner.

Fig. 1 is a side elevation of the core cutting machine of the present invention.

Fig. 2 is a fragmentary rear elevation showing a part of the machine illustrated by Fig. 1.

Fig. 3 is a fragmentary, vertical section taken on line 3-3 of Pig. 1.

Fig. 4 is an enlarged, fragmentary, vertical section taken on staggered line 44 of Fig. 3.

Fig. 5 is a fragmentary, vertical section taken on line 5-5 of Fig. 4.

Fig. 6 is a fragmentary, horizontal section taken on line 66 of Fig. 5.

Fig. 7 is a fragmentary, horizontal section taken on line 77 of Fig. 5.

Fig. 8 is a fragmentary, vertical section taken on line 8-8 of Fig. 4.

Fig. 9 is a fragmentary perspective illustrating the means for clamping a core in place in the machine for a cutting operation.

In the drawings, wherein is shown for purposes of illustration, merely, one embodiment of the invention, A designates the improved core cutting machine generally. The core cutting machine A includes a supporting base frame 1 which is provided with a plurality of suitable legs 2 and supports a tank 3 whose bottom wall is suitably secured to the upper portion of said base frame 1 and whose side and end walls extend upwardly from said bottom wall, said tank being open at its top. The bottom wall of the tank 3 is provided with a screencovered, depressed portion 4 that provides a drainage sump from the bottom wall of which is extended a drainage pipe 5 that discharges into a tank 6 which rests on the floor between the legs of the base frame. The tank 6 is provided with a fluid inlet 7 which is covered by a removable screen 8 which serves to trap metal cuttings, or other foreign matter, that may be delivered by the drainage pipe 5.

Disposed within the tank 3 is a support 9 on which is fixedly mounted at the rear end portion thereof a supporting bracket 10. The supporting bracket 10 has fixed thereto through the instrumentality of bolts 11 a member 12, this member 12 being provided with forwardly extended portions 13 through which aligned openings are formed. The member 12 has pivotally mounted thereon a supporting lever structure 14, said lever structure having an inclined rear portion provided with downwardly projected extensions 15 through which openings are formed, the openings of the forwardly extended portions 13 of the member 12 and the openings of the extensions 15 being in alignment and having extended therethrough a shaft 16 which serves to connect said parts together for pivotal movement of said lever structure with respect to said member 12. The shaft 16 is embraced by a pair of torsional coil springs 17, each of which is connected at one end thereof to a portion 13 of the member 12 and at its opposite end to a collar 18 fixed to the shaft 16, The torsional coil springs 17 tend to rotate the shaft 16 and because the extensions 15 of the lever structure 14 are fixed to the shaft 16 the torsional coil springs tend to move the forward end portion of said lever structure upwardly. v

The lever structure 14 is provided at one side thereof with an arm structure which projects forwardly from the inclined rear portion thereof, and at its forward end said arm structure is provided with an elongated bearing 19 whose inner end is disposed in close proximity to a housing 2t), said housing being closed at one side by a removable housing wall 21 which is held in place by suitable fastening devices 22. The housing 20 encloses a disk cutter 23 which is supported by a shaft 24 that in turn is supported for rotation by said elongated hearing, said shaft 24 having an end portion which is projected from an end of said bearing 19 and on which is fixedly mounted a pulley 25. The inclined, rear portion of the lever structure 14 has rigidly fixed thereto an electric motor 26 on the motor shaft 26' of which a pulley 27 is fixedly mounted, said pulley being of larger diameter than the pulley 25, and operating over said pulleys 25 and 27 is a transmission belt 28. By referring particu larly to Figs. 1 and 3, it will be noted that a vertical rod 29 extends upwardly from the support 9 in a rigid manner and that said rod is screwthreaded throughout its upper portion. The upper portion of said rod extends through an opening formed through an arm 30 which is fixed to the forward portion of the arm structure of the lever structure 14- and projects forwardly therefrom. The screwthreaded portion of the rod has screwthreadedly mounted thereon a nut 31 which contacts with the lower face of the arm 30, and a similar nut 32, which is also mounted screwthreadedly on said screwthreaded portion of the rod 29, contacts with the upper face of said arm 30. Because of this arrangement the disk cutter 23 may be moved downwardly as it becomes worn, the nut 31 being adjusted downwardly in a screwthreaded manner after which the nut 32 is also adjusted downwardly so as to force the forward portion of the lever structure 14, and with it the disk cutter, against the force exerted by the torsional coil springs 17 which tend to lift the forward portion of the lever structure 14.

The improved cutting machine of this invention includes an electrically-operated pump 33 which is related to the tank 6 of the machine A and communicates therewith, said pump being adapted to pump fluid from said tank 6. Leading from the housing of the pump 33 is a V-shaped conductor 34 having valves 35 and 35 disposed in the branches thereof and these branches of said V-shaped conductor 34 having connected to each thereof a vertical pipe 36 which is held in place by a suitable bracket 37 which is secured to the tank 3, as is shown in Fig. 1. A flexible conductor 38 is connected to the upper end portion of each of the pipes 35, one flexible conductor 38 leading to one side of the machine and the other flexible conductor 38 leading to the opposite side of the machine. The flexible conductors 38 lead to fluid discharge members 39, there being one of said fluid discharge members at each side of the machine as is shown to good advantage in Figs. 3 and 5. Each of the fluid discharge members comprises a tubular shower head 40 which is closed at its opposite ends and is provided with perforations 40 for discharge of fluid therefrom, and an angular conductor 42 which communicates with the interior of said shower head, extends from said shower head and has the forward end portions of said flexible conductors connected thereto.

Supported by the support 9 is a pair of spaced walls 43 which are fixed to brackets 44 that in turn are secured by bolts 45 to said support 9. The spaced walls have secured thereto by fastening devices 46 fluid deflectors 47 having each a curved upper portion 43 which partially embraces the related shower head 40, as is shown in Fig. 5, and a portion extended downwardly from said curved, upper portion through which the fastening devices 46 project. Each fluid deflector is provided with an opening 49 through which a part of the related angular conductor 42 is extended, and said angular conductor is supported by an angularly extended portion 50 of said fluid deflector. The spaced walls 43 have an inverted U-shaped member 51 associated therewith, the housing 20 being secured to the top, horizontal leg of said inverted U-shaped member by a fastening device 52 and the side walls of said U-shaped member being in contact with the outer faces of said spaced walls and being secured to said spaced side walls by suitable means.

Mounted atop the two. brackets 4.4 is a pair of bearings 53 and 54 which support for rotation a shaft 55 that extends transversely of the tank 3 of the machine A. The shaft 55 is coupled tov the shaft 56 of a speed reducing mechanism 57, and said speed reducing mechanism is driven by a variable speed controlling mechanism 58, through the instrumentality of a transmission belt 59 that operates over a pulley 60 related to the variable speed controlling mechanism and a pulley 61 related to the speed reducing mechanism 57. The speed of the output shaft of the variable speed reducing mechanism 58 is regulated in a well known manner by adjusting the lever 62 which may be locked relative to a slotted plate 63 by means of a wing nut 64, and said variable speed reduciug mechanism is driven by an electric motor 65. Fixedly mounted on said shaft 55 between the spaced walls 43 for rotation therewith is a rotary member 66 which comprises a pair of side walls 66 and a peripheral wall 66 suitably secured together by welding or otherwise to provide a cylindrical structure. Secured to the opposed side walls of the rotary member 66 by bolts 67 are a pair of flanged collars 67, said shaft 55 being extended through the bores of said collars and through openings formed through the side walls 66* of the rotary member which are aligned with said bores of said collars. The rotary member 66 is secured to the shaft 55 by set screws 68 which extend through the collars 67 and engage said shaft (Fig. 5).

Mounted on the rotary member at the circumferential face thereof is a plurality of spaced clamping mechanisms 69, there being four of such clamping mechanisms shown in the drawing, but obviously a greater or less number thereof may be employed. Each clamping mechanism comprises a pair of plates 70. which are secured by fastening devices 71 to opposed side walls of the rotary member at the outer faces thereof. The pair of plates of a clamping mechanism 69 project outwardly beyond the circumferential face of the rotary member a slight distance, as is shown to good advantage in Fig. 9, there being a bar 72 at one side of the clamping mechanism which is secured to said plates 70. at its opposite ends by fastening devices 73 and contacts with the circumferential face of the rotary member, and a companion bar 74 at the opposite side of the clamping mechanism which likewise is secured to the projected portions of the plates 70 and contacts with the circumferential face of the rotary member 66.

At each end of the clamping mechanism 69 a strip 75 is fixed to the top of the plate 70v at that end of said clamping mechanism and this strip overlaps the inner face of said plate, as is shown to good advantage in Fig. 9. Also, a plate 76 is secured directly to the peripheral face of the rotary member 6 by fastening devices 77 and portions of this plate and the overlapping portions of the strips. 75. provide opposed guideways 78;, these guideways receiving opposed, projected portions 79 of an angular element 79. The angular element 79 includes an outwardly projected leg 79 having a slot 80 formed therein and a leg 79 which is disposed at an approximately right angle relative to said leg 79, there being opposed set screws 81 extended through screwthreaded openings formed through the bars 72 and 74 which engage opposite portions of the angular element 79 and these set screws may be manipulated to adjust said angular element to desired positions.

Each clamping mechanism 69 includes a movable jaw 82 which comprises a pair of arms 83 that are pivotally secured to the opposed plates 70 by means of pivot bolts 84. At their outer ends these. arms 83 extend beyond the strips 75 and these extended end. portions have secured thereto bar portions 85 which extend inwardly toward each other, said bar portions being spaced apart at their adjacent ends. The bar portions are provided with recesses S6 in which is disposed a pair of gripping members 37, said gripping members being secured to said bar portions by fastening devices 88. The inner end portions of the arms 83 are extended beyond the pivot bolts and are shown to good advantage in Fig. 9, and are provided with rollers rotatably mounted thereon, and each of said arms 83 of a clamping mechanism has attached thereto. a rod 91 which has an inturned end portion 91' that projects through an aperture formed through the arm 33. The rod 91 related to each arm 83. of a clamping mechanism projects through a slot 92 formed through an outstanding leg 93 of a bracket 93, said bracket having a leg 93 which is disposed at an angle relative to the leg 93 and is secured by fastening devices 94 to the adjacent plate 70. Likewise, each rod 91 is screwthreaded at its outer end portion and a nut 95 is screw-threadedly mounted on said screwthreaded end portion of said rod, there being a washer associated with said nut and a coil spring 96 which embraces said rod contacts at one end thereof with the washer and at its opposite end with the bracket 93 and tends to move the outer portion of the movable jaw 82 in a direction toward the angular element 79, there being a stop element 82 for limiting such movement. Secured to each of the spaced walls 43 by means of bolts 97 is a bracket 98, and secured to each of said brackets by bolts 99 is a cam 100, having a raised, arcuate cam face 101.

In the operation of the machine of this, invention, the rotary member 66 is rotated slowly through the instrumentality of the motor 65, the variable speed regulator 53, the belt and pulley assembly 59, 60, and 61, the speed reducer S7, and the shaft 55, and water drawn from the tank 6. by the pump 33 discharged from the shower heads 40 and is directed toward the point where the cutting operation is being performed by the disk cutter 23 which is rotated by the motor 26, through the instrumentality of the belt and pulley assembly 25, 27, and 28. As the rotary member 66 is rotated slowly, the clamping mechanisms 69, of course, rotate with said rotating member and as the rollers 90 of the arms 83 of each clamping mechanism engage the cam faces 101 of the cams 100, the outer portion of the movable jaw will be moved away from the angular element 79 of the clamping mechanism, as is shown at the right side of Fig. 4, and during the entire time the rollers 90 of a particular clamping mechanism are in engagement with the cam faces the outer portion of the movable jaw is held in such position against the forces exerted by the coil springs 96. When the movable jaw is being maintained in its moved position by the cam faces 101 a core C is placed on a leg of the angular element 79, which at that time is disposed in an approximately horizontal position as is shown at the right side of Fig. 4, and as the rollers 90 of the particular clamping mechanism 69 receiving the core, passes out of engagement with respect to the cam faces 101 the coil springs 96 draw the outer portion of the movable jaw 82 into tight, gripping contact with the core C and. securely clamp the core between the gripping members 87 of said movable jaw and a leg of the angular element 79. The rotary member 66 continues its slow rotary movement until the clamped core reaches the position of the rotating disk cutter where said core is cut in half, the cut core still clamped in position, traveling with the rotating member 66 until the rollers 90 of the clamping mechanism which clamps said out core engages the cam faces 101 of the cams 100 when the movable jaw of said clamping mechanism will be moved to its open position to permit the cut core to be removed and an uncut core to be inserted in the clamping mechanism from which the cut core is removed.

Thus, the operation of the machine of this invention is continuous, the movable jaw of each clamping mechanism 69 moving its open position each time said clamping mechanism reaches a predetermined point in the travel of the rotatable member 66, an operator being stationed at that point who merely removes the cut core from the open clamping mechanism and substitutes therefor an uncut core which is immediately clamped in place, is cut, and eventually is removed from the machine.

We claim:

1. A cutting machine comprising a supporting frame, a rotary member, a shaft on which said rotary member is supported for rotary movement, means for subjecting said rotary member to slow rotary movement, means, supported by said rotary member, for clamping to said rotary member articles to be cut by the machine, a cutting element, into cutting relation with which said articles are moved by said rotary member, and means for subjecting said cutting element to movement, said clamping means comprising a mechanism which includes an angular shaped fixed member and a pivotally movable jaw between which said articles are disposed, and spring means for drawing said movable jaw into clamping engagement with respect to said article, said fixed member and said movable jaw being disposed generally transversely of the cutting element and having voids therein extending radially inwardly beyond said article and being disposed in alignment with and adapted to receive said cutting element.

2. A cutting machine comprising a supporting frame, a rotary member, a shaft on which said rotary member is supported for rotary movement, means for subjecting said rotary member to slow rotary movement, means, supported by said rotary member, for clamping to said rotary member articles to be cut by the machine, a cutting element, into cutting relation with which said articles are moved by said rotary member, and means for subjecting said cutting element to movement, said clamping means comprising a mechanism which includes a fixed member and a pivotally movable jaw between which said articles are disposed, said fixed jaw being of angular shape and a leg thereof providing a shelf for the article being cut, and means for pivotally moving said movable jaw to its open position, said fixed member and said movable jaw being disposed generally transversely of the cutting element and having voids therein extending radially inwardly beyond said article and being disposed in alignment with and adapted to receive said cutting element.

3. A cutting machine comprising a supporting frame, a rotary member, a shaft on which said rotary member is supported for rotary movement, means for subjecting said rotary member to slow rotary movement, means, supported by said rotary member, for clamping to said rotary member articles to be cut by the machine, a cutting element, into cutting relation with which said articles are moved by said rotary member, and means for subjecting said cutting element to movement, said clamping means comprising a mechanism which includes a fixed member and a pivotally movable jaw between which said articles are disposed, said fixed jaw being of angular shape and a leg thereof providing a shelf for the article being cut, and means for pivotally moving said movable jaw to its open position during movement of said rotary member, said fixed member and said movable jaw being disposed generally transversely of the cutting element and having a notch therein extending radially inwardly beyond said article and being disposed in alignment with and adapted to receive said cutting element.

4. A cutting machine comprising a supporting frame, a rotary member, a shaft on which said rotary member is supported for rotary movement, means for subjecting said rotary member to slow rotary movement, means, supported by said rotary member, for clamping to said rotary member articles to be cut by the machine, a cut ting element, into cutting relation with which said articles are moved by said rotary member, and means for subjecting said cutting element to movement, said clamping means comprising a mechanism which includes a fixed member and a pivotally movable jaw between which said articles are disposed, said fixed jaw being of angular shape and a leg thereof providing a shelf for the article being cut, and cam means for pivotally moving said movable jaw to its open position during movement of said rotary member, said fixed member and said movable jaw being disposed generally transversely of the cutting element and having a notch therein extending radially inwardly beyond said article and being disposed in alignment with and adapted to receive said cutting element.

5. A cutting machine comprising a supporting frame, a rotary member, a shaft on which said rotary member is supported for rotary movement, means for subjecting said rotary member to slow rotary movement, means, supported by said rotary member, for clamping to said rotary member articles to be cut by the machine, a cutting element, into cutting relation with which said articles are moved by said rotary member, and means for subject ing said cutting element to movement, said clamping means comprising a mechanism which includes a fixed member and a pivotally movable jaw between which said articles are disposed, and fixed cam means for pivotally moving said movable jaw to its open position during movement of said rotary member, said fixed member and said movable jaw being disposed generally transversely of the cutting element and having a notch therein extending radially inwardly beyond said article and being disposed in alignment with and adapted to receive said cutting element.

6. A cutting machine comprising a supporting frame, a rotary member, a shaft on which said rotary member is supported for rotary movement, means for subjecting said rotary member to slow rotary movement, means, supported by said rotary member, for clamping to said rotary member articles to be cut by the machine, a cutting element, into cutting relation with which said articles are moved by said rotary member, and means for subjecting said cutting element to movement, said clampingmeans comprising a mechanism which includes a fixed member and a pivotally movable jaw between which said articles are disposed, and fixed cam means for pivotally moving said movable jaw to its open position during movement of said rotary member, said movable jaw having pivoted arms which are provided with rollers that engage said fixed cam means for moving said movable jaw, said fixed member and said movable jaw being disposed generally transversely of the cutting element and having a notch therein extending radially inwardly beyond said article and being disposed in alignment with and adapted to receive said cutting element.

7. A cutting machine comprising a supporting frame, a rotary member, a shaft on which said rotary member is supported for rotary movement, means for subjecting said rotary member to slow rotary movement, means, supported by said rotary member, for clamping to said rotary member articles to be cut by the machine, a cutting element, into cutting relation with which said articles are moved by said rotary member, and means for subjecting said cutting element to movement, said clamping means comprising a mechanism which includes a fixed angular member and a pivotally movable jaw between which said articles are disposed, and fixed cam means for pivotally moving said movable jaw to its open position during movement of said rotary member, said movable jaw having pivoted arms which are provided with rollers that engage said fixed cam means for moving said movable jaw, said fixed member and said movable jaw being disposed generally transversely of the cutting element and having a notch therein extending radially inwardly beyond said article and being disposed in alignment with and adapted to receive said cutting element.

8. A cutting machine comprising a support, a cutting element; mounted on the support, a rotary member, a shaft by means of which said rotary member is mounted on the support for rotary movement on an axis transverse to the plane of the cutting element, means for clamp ing articles to be cut on the rotary member, said rotary member being so located relative to the cutting element that, upon rotation of the rotary member, articles clamped thereon are moved into cutting relation with respect to the cutting element, means for driving the rotary member to carry articles clamped thereon into cutting relation with-respect to the cutting element, and means for driving the cutting element to cut the articles, said clamping means comprising a pair of jaws disposed generally transversely of the cutting element, said jaws being mounted on said rotary member for relative movement toward and away from one another in the plane of the cutting element for clamping an article therebetween and for releasing the article after it has been out, said jaws being formed to allow for passage of the cutting element through an article clamped between the jaws.

9. A cutting machine as set forth in claim 8 wherein each of the jaws is formed with a slot in the plane of the cutting element for passage of the cutting element.

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